Quiz on triangles

Q1. If one angle of a triangle is obtuse, then which one of the following is the possible measure of remaining angles??

100° 85°

Q2. What is the third angle for the triangle where angle1 = 45° and angle2 = 45°?

45° 90° 60°

Q3. Which of the following triangles are always similar?

Equilateral triangle Isosceles triangle

Q4. Which of the following can form a right angled triangle?

14, 15, 26 12, 16, 20

Q5. A triangle can have

one right angle two right angle